Hello Aspirant,

See till now no notification has been released for JEE-Advance 2023 other than it's syllabus so at this moment of time it is quite difficult to say whether the candidates scoring less than 75% in class 12th will be eligible or not for JEE-Advance 2023, because the relaxation is only provided till current academic year and nothing is known for next year so kindly wait for it. However for JEE-Main you can appear even if the criteria gets restored because there is no requirement of any minimum percentage.

So you have only option is to wait until the notification gets out for JEE-Advance 2023 or by that time you can also appear for improvement examination and can improve your score.

For more details kindly check out the links given below :-

JEE Advanced Eligibility Criteria 2022 - Check Age Limit, Domicile, Average Marks (careers360.com)

JEE Main Eligibility Criteria 2022 (Released) - Check Age Limit, Qualifying Marks, Number of Attempts (careers360.com)

I hope this information helps you.

Good Luck!!